Got the rear subframe bushings done today...before the subzero cold comes into town. Not real difficult once you get the hang of it, and having the right rental tools helps. It is soooooo nice to not have creaks and groans now when braking, accelerating, turning, going up the driveway - you name it.
All 4 metal inserts pulled right out of the rubber. I don't think it had ever been done in 124k miles.
Also put 1/2 gallon of coolant in the G8 - dealer underfilled after replacing the WP.